Convert.ToString build-time error

Question

I am writing a Console application that outputs the binary average of inputted base-10 numbers:

        Console.WriteLine("Enter numbers to find the average of. Seperate each  number with a pound sign(#)");
        string[] n = Console.ReadLine().Split('#');
        List<string> final = new List<string>();
        final.AddRange(n);
        double t = 0;
        for (int i = 0; i < final.Count; i++)
        {
            t = t + Convert.ToDouble(final[i]);
        }
        int ct = final.Count;
        double average = t / ct;
        string binAv = Convert.ToString(average, 2);

However, the compiler generates a build-time error on the "Convert.ToString(average,2)" line. The error:

The best overloaded method match for 'System.Convert.ToString(double, System.IFormatProvider)' has some invalid arguments

How can I fix this error? Thanks.

You can fix this error by passing a IFormatProvider instead of 2? Did you even read the error message? — Pierre-Luc Pineault, Aug 04 '13 at 23:06
What do you want to see as binary form of *double* for ex 2.5 — I4V, Aug 04 '13 at 23:08
@Pierre-LucPineault - I thought same at first but [appears valid](http://stackoverflow.com/questions/923771/quickest-way-to-convert-a-base-10-number-to-any-base-in-net), it may only work for integers for the base conversion here — Sayse, Aug 04 '13 at 23:09

score 0 · Accepted Answer · answered Aug 04 '13 at 23:15

0

double d = 2.2;
var bin =  String.Join("", BitConverter.GetBytes(d)
                          .Select(x => Convert.ToString(x, 2).PadLeft(8,'0')));

answered Aug 04 '13 at 23:15

I4V

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Convert.ToString build-time error

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